heavy traffic route

例句：

1. 1. The heavy traffic route is causing delays for commuters.
   这条重型交通路线正在给通勤者造成延误。
2. 2.The heavily congested route has become a major problem in the city.
   这条严重拥堵的路线已经成为城市的一个主要问题。
3. 3.The heavily trafficked route is prone to accidents due to its high volume of vehicles.
   由于车辆流量大，这条重型交通路线容易发生事故。